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package com.android.launcher3;
import android.annotation.TargetApi;
import android.content.res.Resources;
import android.graphics.Rect;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.view.accessibility.AccessibilityEventCompat;
import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
import android.util.SparseArray;
import android.view.View;
import android.view.View.AccessibilityDelegate;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
import com.android.launcher3.LauncherModel.ScreenPosProvider;
import com.android.launcher3.util.Thunk;
import java.util.ArrayList;
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public class LauncherAccessibilityDelegate extends AccessibilityDelegate {
public static final int REMOVE = R.id.action_remove;
public static final int INFO = R.id.action_info;
public static final int UNINSTALL = R.id.action_uninstall;
public static final int ADD_TO_WORKSPACE = R.id.action_add_to_workspace;
public static final int MOVE = R.id.action_move;
enum DragType {
ICON,
FOLDER,
WIDGET
}
public static class DragInfo {
DragType dragType;
ItemInfo info;
View item;
}
private DragInfo mDragInfo = null;
private final SparseArray<AccessibilityAction> mActions =
new SparseArray<AccessibilityAction>();
@Thunk final Launcher mLauncher;
public LauncherAccessibilityDelegate(Launcher launcher) {
mLauncher = launcher;
mActions.put(REMOVE, new AccessibilityAction(REMOVE,
launcher.getText(R.string.delete_target_label)));
mActions.put(INFO, new AccessibilityAction(INFO,
launcher.getText(R.string.info_target_label)));
mActions.put(UNINSTALL, new AccessibilityAction(UNINSTALL,
launcher.getText(R.string.delete_target_uninstall_label)));
mActions.put(ADD_TO_WORKSPACE, new AccessibilityAction(ADD_TO_WORKSPACE,
launcher.getText(R.string.action_add_to_workspace)));
mActions.put(MOVE, new AccessibilityAction(MOVE,
launcher.getText(R.string.action_move)));
}
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(host, info);
if (!(host.getTag() instanceof ItemInfo)) return;
ItemInfo item = (ItemInfo) host.getTag();
if ((item instanceof ShortcutInfo)
|| (item instanceof LauncherAppWidgetInfo)
|| (item instanceof FolderInfo)) {
// Workspace shortcut / widget
info.addAction(mActions.get(REMOVE));
info.addAction(mActions.get(MOVE));
} else if ((item instanceof AppInfo) || (item instanceof PendingAddItemInfo)) {
// App or Widget from customization tray
if (item instanceof AppInfo) {
info.addAction(mActions.get(UNINSTALL));
}
info.addAction(mActions.get(INFO));
info.addAction(mActions.get(ADD_TO_WORKSPACE));
}
}
@Override
public boolean performAccessibilityAction(View host, int action, Bundle args) {
if ((host.getTag() instanceof ItemInfo)
&& performAction(host, (ItemInfo) host.getTag(), action)) {
return true;
}
return super.performAccessibilityAction(host, action, args);
}
public boolean performAction(View host, ItemInfo item, int action) {
Resources res = mLauncher.getResources();
if (action == REMOVE) {
if (DeleteDropTarget.removeWorkspaceOrFolderItem(mLauncher, item, host)) {
announceConfirmation(R.string.item_removed_from_workspace);
return true;
}
return false;
} else if (action == INFO) {
InfoDropTarget.startDetailsActivityForInfo(item, mLauncher);
return true;
} else if (action == UNINSTALL) {
DeleteDropTarget.uninstallApp(mLauncher, (AppInfo) item);
return true;
} else if (action == MOVE) {
beginAccessibleDrag(host, item);
} else if (action == ADD_TO_WORKSPACE) {
final int preferredPage = mLauncher.getWorkspace().getCurrentPage();
final ScreenPosProvider screenProvider = new ScreenPosProvider() {
@Override
public int getScreenIndex(ArrayList<Long> screenIDs) {
return preferredPage;
}
};
if (item instanceof AppInfo) {
final ArrayList<ItemInfo> addShortcuts = new ArrayList<ItemInfo>();
addShortcuts.add(((AppInfo) item).makeShortcut());
mLauncher.showWorkspace(true, new Runnable() {
@Override
public void run() {
mLauncher.getModel().addAndBindAddedWorkspaceItems(
mLauncher, addShortcuts, screenProvider, 0, true);
announceConfirmation(R.string.item_added_to_workspace);
}
});
return true;
} else if (item instanceof PendingAddItemInfo) {
mLauncher.getModel().addAndBindPendingItem(
mLauncher, (PendingAddItemInfo) item, screenProvider, 0);
announceConfirmation(R.string.item_added_to_workspace);
return true;
}
}
return false;
}
@Thunk void announceConfirmation(int resId) {
announceConfirmation(mLauncher.getResources().getString(resId));
}
@Thunk void announceConfirmation(String confirmation) {
mLauncher.getDragLayer().announceForAccessibility(confirmation);
}
public boolean isInAccessibleDrag() {
return mDragInfo != null;
}
public DragInfo getDragInfo() {
return mDragInfo;
}
public void handleAccessibleDrop(CellLayout targetContainer, Rect dropLocation,
String confirmation) {
if (!isInAccessibleDrag()) return;
int[] loc = new int[2];
loc[0] = dropLocation.centerX();
loc[1] = dropLocation.centerY();
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(targetContainer, loc);
mLauncher.getDragController().completeAccessibleDrag(loc);
endAccessibleDrag();
announceConfirmation(confirmation);
}
public void beginAccessibleDrag(View item, ItemInfo info) {
mDragInfo = new DragInfo();
mDragInfo.info = info;
mDragInfo.item = item;
mDragInfo.dragType = DragType.ICON;
if (info instanceof FolderInfo) {
mDragInfo.dragType = DragType.FOLDER;
} else if (info instanceof LauncherAppWidgetInfo) {
mDragInfo.dragType = DragType.WIDGET;
}
CellLayout.CellInfo cellInfo = new CellLayout.CellInfo(item, info);
Rect pos = new Rect();
mLauncher.getDragLayer().getDescendantRectRelativeToSelf(item, pos);
mLauncher.getDragController().prepareAccessibleDrag(pos.centerX(), pos.centerY());
mLauncher.getWorkspace().enableAccessibleDrag(true);
mLauncher.getWorkspace().startDrag(cellInfo, true);
}
public boolean onBackPressed() {
if (isInAccessibleDrag()) {
cancelAccessibleDrag();
return true;
}
return false;
}
private void cancelAccessibleDrag() {
mLauncher.getDragController().cancelDrag();
endAccessibleDrag();
}
private void endAccessibleDrag() {
mDragInfo = null;
mLauncher.getWorkspace().enableAccessibleDrag(false);
}
}
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